摘要
以小麦秸秆为原材料,ZnCl2为活化剂,微波加热辐照制备小麦秸秆活性炭。通过改变浸渍比、微波功率、活化时间等因素制得秸秆活性炭比表面积最大为1 230 m2/g。并将制备的秸秆活性炭和选取的商品活性炭用于甲苯的动态吸附试验,研究秸秆活性炭吸附甲苯的性能。结果表明,单位面积秸秆活性炭和商品活性炭吸附甲苯量分别为0.267、0.276 mg/m2,说明秸秆活性炭和商品活性炭吸附性能相当。同时对吸附结果进行Langmuir方程拟合,相关系数R2为0.997。
With wheat straw as raw material, ZnCl2 as chemical activator, straw charcoal was prepared by microwave beating. The specific surface area of the activated carbon, which was prepared by changing the impregnation ratio, microwave power, discharge time and other factors, was 1 230 m^2/g. Using dynamic adsorption experiments to study the adsorptive properties of straw charcoal and commercial activated carbon for toluene, and results showed that adsorption capacities of straw charcoal and commercial activated carbon for toluene were 0.267 mg/m^2 and 0.276 mg/m^2 respectively, which indicated that the adsorption capacity of straw charcoal was close to that of commercial activated carbon and the straw utilization was achieved. Meanwhile the adsorption results fitted Langmuir equation well, with correlation coefficient as 0.997.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第10期108-111,116,共5页
Environmental Science & Technology
基金
陕西省教育厅专项科研计划项目(11JK0767)
关键词
秸杆
活性炭
甲苯
吸附
微波
wheat straw
activated carbon
toluene
adsorption
microwave
